course 6 - interrupts

[lunaix-os.git] / lunaix-os / arch / x86 / interrupt.S

diff --git a/lunaix-os/arch/x86/interrupt.S b/lunaix-os/arch/x86/interrupt.S
new file mode 100644 (file)
index 0000000..584b143
--- /dev/null
+++ b/lunaix-os/arch/x86/interrupt.S
@@ -0,0 +1,27 @@
+.macro isr_template vector, no_error_code=1
+    .global _asm_isr\vector
+    .type _asm_isr\vector, @function
+    _asm_isr\vector:
+        .if \no_error_code
+            pushl $0x0
+        .endif
+        pushl $\vector
+        jmp interrupt_wrapper
+.endm
+
+.section .text
+    isr_template 0
+
+    interrupt_wrapper:
+
+        movl %esp, %eax
+        andl $0xfffffff0, %esp
+        subl $16, %esp
+        movl %eax, (%esp)
+
+        call interrupt_handler
+        pop %eax
+        movl %eax, %esp
+        addl $8, %esp
+
+        iret
\ No newline at end of file